20:1 odds it's the CV shafts. you can do them yourself but it requires a lot of dissasembly of the front end. If you search for my "replacing front hubs" thread, that gives you an idea of what you are in for, just for starters. You still have to get the CV's off! They aren't terribly expensive though - I think they were like $80 a side from autozone....

but, BEFORE you start, make sure you have a 35mm and 36mm socket. the old nut will most likely be 35mm, and the new one 36mm. Go figure. Also, sounds like you might be up there in mileage - might be worth replacing the hubs while you've got it torn apart as well.